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Manipulation of Andreev bound states in proximity Josephson junctions

C. Strunk, U. Regensburg, Germany

I will report on measurements of the current-phase relation (CPR) in
diffusive Nb/Ag/Nb-Josephson junctions in and out of thermodynamic
equilibrium. Rf-excitation of the junction leads to higher harmonics
in the CPR, which can be explained by a non-equibrium occupation of the
ABS. In a second experiment, I will discuss Andreev reflection from a
moving condensate in ballisitc Nb/InAs/Nb Josephson junctions, which
has profound effects on both the Andreev reflection probabilities and
the proximity-induced supercurrent.


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